FarsiLibrary.WPF.Controls.FXDatePicker.IsDescendant C# (CSharp) Метод

        private bool IsDescendant(Visual reference, Visual node)
        {
            bool success = false;

            Visual curr = node;

            while (curr != null)
            {
                if (curr == reference)
                {
                    success = true;
                    break;
                }

                // Try to jump up logical links if possible.
                FrameworkElement logicalCurrent = curr as FrameworkElement;
                Visual logicalCurrentVisualParent = null;
                // Check for logical parent and make sure it's a Visual
                if (logicalCurrent != null)
                {
                    logicalCurrentVisualParent = logicalCurrent.Parent as Visual;
                }

                if (logicalCurrentVisualParent != null)
                {
                    curr = logicalCurrentVisualParent;
                }
                else
                {
                    // Logical link isn't there; use child link
                    curr = VisualTreeHelper.GetParent(curr) as Visual;
                }
            }

            return success;
        }